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locking/rwbase: Properly match set_and_save_state() to restore_state()

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Noticed while looking at the readers race.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Will Deacon <will@kernel.org>
Link: https://lkml.kernel.org/r/20210909110203.828203010@infradead.org
This commit is contained in:
Peter Zijlstra 2021-09-09 12:59:17 +02:00
parent 6880fa6c56
commit 7687201e37
1 changed files with 1 additions and 1 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

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kernel/locking/rwbase_rt.c
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@ -220,7 +220,7 @@ static int __sched rwbase_write_lock(struct rwbase_rt *rwb,
for (; atomic_read(&rwb->readers);) { for (; atomic_read(&rwb->readers);) {
/* Optimized out for rwlocks */ /* Optimized out for rwlocks */
if (rwbase_signal_pending_state(state, current)) { if (rwbase_signal_pending_state(state, current)) {
__set_current_state(TASK_RUNNING); rwbase_restore_current_state();
__rwbase_write_unlock(rwb, 0, flags); __rwbase_write_unlock(rwb, 0, flags);
return -EINTR; return -EINTR;
} }